{"text":"After replacing Exhaust Pressure Sensor and Sensing tube which is located on the front right of the engine. I ran a Regen with Cummins INSITE. After about an hour into the regen, the SCR/DOC started leaking DEF Fluid and formed a huge puddle. After the regen was over. It stopped leaking.\n\nThe gauge inside the truck showed I went from 3/4 to 1/2 tank of DEF. So I drove about 20 miles to a truck stop, topped off the DEF tank, after fueling pulled forward out of the line and went inside truck stop to grab a bite to eat. When I came back to the truck. AGAIN, def puddle on the bottom. The DEF gauge showed it went from FULL Tank to 3/4 tank. I pulled out and parked in a parking spot. All the way to the spot it was leaking fluid. I then hopped on the highway and drove about 20 miles back to my yard. When I got to the yard, the DEF Fluid was no longer leaking. And DEF gauage read it still had 3/4 DEF.\n\nThe engine is derated. I connected INSITE, and it's showing the following codes: \n\n3574- Aftertreatment 1 Diesel Exhaust Fluid Pressure Sensor-Data valid but below normal operating range.\n\n1682- Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Input Lines-Condition Exists\n\n\nIt was too dark last night. And it was really late. I'm thinking it's some type of DEF Lines that carry the fluid, maybe? Anyone else had this issue in the past. I will upload a short video clip on youtube and post the link here in a few minutes.\n\nBTW, this is a 2012 kenworth t660.","pics":"[]","canComment":true}
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